Web view scale not changing

由 Anup DSouza

2017年 03月 28日 23:17 English(英语) 3 回复

Hi All,

I have a webview of size 300x250 which loads url from web say http://www.google.com

I'm trying to scale the webview so that the page fits properly based on the frame of webview, however when applying the scale, it seems to be unchanged.

Could anyone point out what could be wrong in the following code?

/* WebView */

    Evas_Object *evas = evas_object_evas_get(ad->win);
    web_view = ewk_view_add(evas);
    evas_object_move(web_view, 50, 50);
    evas_object_resize(web_view, 300, 250);
    evas_object_show(web_view);

    ewk_view_url_set(web_view, "http://www.google.com");

    web_view_apply_scale(0.5);

static void web_view_apply_scale (float scale_factor)
{

    float currentScaleFactor = ewk_view_scale_get(web_view);

    if((currentScaleFactor == -1) || (scale_factor == currentScaleFactor)) {
        // do nothing, undefined scale factor or scale factor equals current scale factor
    } else {

        // apply scale
        Eina_Bool success = ewk_view_scale_set(web_view, scale_factor, 0, 0);
        if(success) {
            dlog_print(DLOG_INFO, LOG_TAG, "web view scale success, current scale: %f", ewk_view_scale_get(web_view));
        } else {
            dlog_print(DLOG_INFO, LOG_TAG, "web view scale failure, current scale: %f", ewk_view_scale_get(web_view));
        }
    }
}

Console always prints:

03-29 15:11:29.146 : INFO / websample ( 3670 : 3670 ) : web view scale success, current scale: 1.000000

I tried changing the scale by adding a callback to web view loading finished but there it prints scale as 0.36 when setting scale as 0.5. Visually there is no change noticeable.

Is the issue because im passing 0,0 for the position to apply scale at? I don't know how to scale the webview from the webview's center point without user interaction.

Any help would be great.

编辑者为: Anup DSouza 开 28 3月, 2017

响应

3 回复

Yasin Ali

2017年 03月 30日 03:53

Hi,

You may try with program design in code like:

static void my_table_pack(Evas_Object *table, Evas_Object *child, int x, int y,
     int w, int h) {
 evas_object_size_hint_align_set(child, EVAS_HINT_FILL, EVAS_HINT_FILL);
 evas_object_size_hint_weight_set(child, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 elm_table_pack(table, child, x, y, w, h);
 evas_object_show(child);
}

static void create_base_gui(appdata_s *ad) {

....................
 /* WebView 1*/
   /* ... ... ... */
 my_table_pack(table, web_view, 0, 2, 3, 8);
....................

}

Hope it will work.
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Anup DSouza

2017年 03月 31日 00:44

Hi Yasin,

Thank you for your reply. Actually my query is regarding the webview content scale. I'm able to size the webview properly however when setting a small size, the web page content displaying inside the webview overflows and the webview shows scroll bars. I want to scale the webview content to avoid the scroll bars.

Any idea how to achieve this?